... ,Taconic,Isola,PTFE, Bergquist 2). Surface Treatment: HASL,HASL lead free,Flash gold, immersion gold, OSP,Gold Finger Palting,Selective thick gold ... ALBoard thickness: 1.6mm Copper thickness: 1ozSurface finished: HASL lead free Lead time:5 working daysPrototype for standard process specificationFast delivery ...